MOSA

MS6821

4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control

REV 3

1/29

www.mosanalog.com

4 Stereo Inputs, 2W BTL Stereo Output

16-bit Stereo DAC and Volume Control

FEATURES

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Operation range: 2.4V ~ 6.5V

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Volume control range

Gain: 0 to 21dB, 3dB/step

Attenuation: 0 to –77.5dB, 1.25dB/step

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4 stereo inputs (mixed with an audio DAC)

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Output mode : Speaker( BTL)/Headphone(SE)

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BTL Output power, THD+N=1%, Stereo Input

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BTL Output power, DAC Input

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Built-in 16-bit Audio DAC

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Excellent Power Supply Rejection Ratio(PSRR)

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Flexibility power management

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Component less

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Reduce pop noise circuit

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Housed in SOP28, TSSOP28 package, enhanced

thermal PAD

APPLICATIONS

Multimedia system, Portable Digital Audio.

DESCRIPTION

The MS6821 is a 16-bits voltage-output Digital-to-Analog Converter (DAC) integrated class AB stereo headphone

driver and stereo speaker power amplifier. It can drive 2W of continuous average power into a dual 4Ω bridged-tied

(BTL) speaker or 2 * 90mW into stereo 32Ω single ended (SE) headphone. The 16-bit DAC supports general and

popular formats as I2S, Right justified. The volume control offers wide range of gain and attenuation for 4-set stereo

input. All of the functions are set by I2C interface.

The MS6821 has good feature for portable equipment, including wide voltage operation 2.4V ~ 6.5V, low power

consumption, flexible power management, component less and small package TSSOP28, make the MS6821 ideally

suitable for use in the portable digital audio equipments.

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